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ida_solver.c
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ida_solver.c
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/*
* This file is part of OpenModelica.
*
* Copyright (c) 1998-2016, Open Source Modelica Consortium (OSMC),
* c/o Linköpings universitet, Department of Computer and Information Science,
* SE-58183 Linköping, Sweden.
*
* All rights reserved.
*
* THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THE BSD NEW LICENSE OR THE
* GPL VERSION 3 LICENSE OR THE OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.2.
* ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THE OSMC PUBLIC LICENSE OR THE GPL VERSION 3,
* ACCORDING TO RECIPIENTS CHOICE.
*
* The OpenModelica software and the OSMC (Open Source Modelica Consortium)
* Public License (OSMC-PL) are obtained from OSMC, either from the above
* address, from the URLs: http://www.openmodelica.org or
* http://www.ida.liu.se/projects/OpenModelica, and in the OpenModelica
* distribution. GNU version 3 is obtained from:
* http://www.gnu.org/copyleft/gpl.html. The New BSD License is obtained from:
* http://www.opensource.org/licenses/BSD-3-Clause.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, EXCEPT AS
* EXPRESSLY SET FORTH IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE
* CONDITIONS OF OSMC-PL.
*
*/
/*! \file ida_solver.c
*/
#ifdef USE_PARJAC
#include <omp.h>
#define GC_THREADS
#include <gc/omc_gc.h>
#endif
#include <string.h>
#include <setjmp.h>
#include "omc_config.h"
#include "openmodelica.h"
#include "openmodelica_func.h"
#include "simulation_data.h"
#include "util/omc_error.h"
#include "util/parallel_helper.h"
#include "gc/omc_gc.h"
#include "simulation/options.h"
#include "simulation/simulation_runtime.h"
#include "simulation/results/simulation_result.h"
#include "simulation/solver/solver_main.h"
#include "simulation/solver/model_help.h"
#include "simulation/solver/external_input.h"
#include "simulation/solver/epsilon.h"
#include "simulation/solver/omc_math.h"
#include "simulation/solver/ida_solver.h"
#include "simulation/solver/dassl.h"
#include "simulation/solver/dae_mode.h"
#include "simulation/solver/jacobianSymbolical.h"
#ifdef WITH_SUNDIALS
/* readability */
#define SCALE_MODE 0
#define RESCALE_MODE 1
#define MINIMAL_SCALE_FACTOR 1e-8
#include <sundials/sundials_nvector.h>
#include <nvector/nvector_serial.h>
#include <idas/idas.h>
#include <idas/idas_dense.h>
#include <idas/idas_klu.h>
#include <idas/idas_spgmr.h>
#include <idas/idas_spbcgs.h>
#include <idas/idas_sptfqmr.h>
/* Function prototypes */
static int callDenseJacobian(long int Neq, double tt, double cj,
N_Vector yy, N_Vector yp, N_Vector rr,
DlsMat Jac, void *user_data,
N_Vector tmp1, N_Vector tmp2, N_Vector tmp3);
static int callSparseJacobian(realtype currentTime, realtype cj,
N_Vector yy, N_Vector yp, N_Vector rr, SlsMat Jac, void *user_data,
N_Vector tmp1, N_Vector tmp2, N_Vector tmp3);
static int residualFunctionIDA(double time, N_Vector yy, N_Vector yp, N_Vector res, void* userData);
int rootsFunctionIDA(double time, N_Vector yy, N_Vector yp, double *gout, void* userData);
static int getScalingFactors(DATA* data, IDA_SOLVER *idaData, SlsMat scaleMatrix);
static int idaScaleData(IDA_SOLVER *idaData);
static int idaReScaleData(IDA_SOLVER *idaData);
static int idaScaleVector(N_Vector vec, double* factors, unsigned int size);
static int idaReScaleVector(N_Vector vec, double* factors, unsigned int size);
int ida_event_update(DATA* data, threadData_t *threadData);
/* Static variables */
static IDA_SOLVER *idaDataGlobal;
static int initializedSolver = 0;
int checkIDAflag(int flag)
{
TRACE_PUSH
int retVal;
switch(flag)
{
case IDA_SUCCESS:
case IDA_TSTOP_RETURN:
retVal = 0;
break;
default:
retVal = 1;
break;
}
TRACE_POP
return retVal;
}
void errOutputIDA(int error_code, const char *module, const char *function,
char *msg, void *userData)
{
TRACE_PUSH
DATA* data = (DATA*)(((IDA_USERDATA*)((IDA_SOLVER*)userData)->simData)->data);
infoStreamPrint(LOG_SOLVER, 1, "#### IDA error message #####");
infoStreamPrint(LOG_SOLVER, 0, " -> error code %d\n -> module %s\n -> function %s", error_code, module, function);
infoStreamPrint(LOG_SOLVER, 0, " Message: %s", msg);
messageClose(LOG_SOLVER);
TRACE_POP
}
/* initialize main ida data */
int ida_solver_initial(DATA* data, threadData_t *threadData,
SOLVER_INFO* solverInfo, IDA_SOLVER *idaData)
{
TRACE_PUSH
int flag;
long int i;
double* tmp;
/* default max order */
int maxOrder = 5;
/* sim data */
idaData->simData = (IDA_USERDATA*)malloc(sizeof(IDA_USERDATA));
idaData->simData->data = data;
idaData->simData->threadData = threadData;
/* initialize constants */
idaData->setInitialSolution = 0;
/* start initialization routines of sundials */
idaData->ida_mem = IDACreate();
if (idaData->ida_mem == NULL){
throwStreamPrint(threadData, "##IDA## Initialization of IDA solver failed!");
}
idaData->daeMode = 0;
idaData->residualFunction = residualFunctionIDA;
idaData->N = (long int)data->modelData->nStates;
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
/* change parameter for DAE mode */
if (compiledInDAEMode)
{
idaData->daeMode = 1;
idaData->N = (long int) data->modelData->nStates + data->simulationInfo->daeModeData->nAlgebraicDAEVars;
}
infoStreamPrint(LOG_SOLVER, 1, "## IDA ## Initializing solver of size %ld %s.", idaData->N, idaData->daeMode?"in DAE mode":"");
/* initialize states and der(states) */
if (idaData->daeMode)
{
idaData->states = (double*) malloc(idaData->N*sizeof(double));
idaData->statesDer = (double*) calloc(idaData->N,sizeof(double));
memcpy(idaData->states, data->localData[0]->realVars, sizeof(double)*data->modelData->nStates);
// and also algebraic vars
getAlgebraicDAEVars(data, idaData->states + data->modelData->nStates);
memcpy(idaData->statesDer, data->localData[0]->realVars + data->modelData->nStates, sizeof(double)*data->modelData->nStates);
idaData->y = N_VMake_Serial(idaData->N, idaData->states);
idaData->yp = N_VMake_Serial(idaData->N, idaData->statesDer);
}
else
{
idaData->y = N_VMake_Serial(idaData->N, data->localData[0]->realVars);
idaData->yp = N_VMake_Serial(idaData->N, data->localData[0]->realVars + data->modelData->nStates);
}
flag = IDAInit(idaData->ida_mem,
idaData->residualFunction,
data->simulationInfo->startTime,
idaData->y,
idaData->yp);
/* allocate memory for jacobians calculation */
idaData->ysave = (double*) malloc(idaData->N*sizeof(double));
idaData->ypsave = (double*) malloc(idaData->N*sizeof(double));
idaData->delta_hh = (double*) malloc(idaData->N*sizeof(double));
idaData->errwgt = N_VNew_Serial(idaData->N);
idaData->newdelta = N_VNew_Serial(idaData->N);
/* allocate memory for initialization process */
tmp = (double*) malloc(idaData->N*sizeof(double));
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Something goes wrong while initialize IDA solver!");
}
flag = IDASetUserData(idaData->ida_mem, idaData);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Something goes wrong while initialize IDA solver!");
}
flag = IDASetErrHandlerFn(idaData->ida_mem, errOutputIDA, idaData);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Something goes wrong while set error handler!");
}
/* set nominal values of the states for absolute tolerances */
infoStreamPrint(LOG_SOLVER, 1, "The relative tolerance is %g. Following absolute tolerances are used for the states: ", data->simulationInfo->tolerance);
for(i=0; i < data->modelData->nStates; ++i)
{
tmp[i] = fmax(fabs(data->modelData->realVarsData[i].attribute.nominal), 1e-32);
infoStreamPrint(LOG_SOLVER_V, 0, "%ld. %s -> %g", i+1, data->modelData->realVarsData[i].info.name, tmp[i]);
}
/* daeMode: set nominal values for algebraic variables */
if (idaData->daeMode)
{
getAlgebraicDAEVarNominals(data, tmp + data->modelData->nStates);
}
/* multiply by tolerance to obtain a relative tolerace */
for(i=0; i < idaData->N; ++i)
{
tmp[i] *= data->simulationInfo->tolerance;
}
messageClose(LOG_SOLVER);
flag = IDASVtolerances(idaData->ida_mem,
data->simulationInfo->tolerance,
N_VMake_Serial(idaData->N,tmp));
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setting tolerances fails while initialize IDA solver!");
}
if (omc_flag[FLAG_IDA_SCALING]) // idaNoScaling
{
/* allocate memory for scaling */
idaData->yScale = (double*) malloc(idaData->N*sizeof(double));
idaData->ypScale = (double*) malloc(idaData->N*sizeof(double));
idaData->resScale = (double*) malloc(idaData->N*sizeof(double));
/* set yScale from nominal values */
for(i=0; i < data->modelData->nStates; ++i)
{
idaData->yScale[i] = fabs(data->modelData->realVarsData[i].attribute.nominal);
idaData->ypScale[i] = 1.0;
}
/* daeMode: set nominal values for algebraic variables */
if (idaData->daeMode)
{
getAlgebraicDAEVarNominals(data, idaData->yScale + data->modelData->nStates);
for(i=data->modelData->nStates; i < idaData->N; ++i)
{
idaData->ypScale[i] = 1.0;
}
}
infoStreamPrint(LOG_SOLVER_V, 1, "The scale factors for all ida states: ");
for(i=0; i < idaData->N; ++i)
{
infoStreamPrint(LOG_SOLVER_V, 0, "%ld. scaleFactor: %g", i+1, idaData->yScale[i]);
}
messageClose(LOG_SOLVER_V);
}
/* initialize */
idaData->disableScaling = 0;
/* set root function */
/* if FLAG_NO_ROOTFINDING is set, solve perform without internal root finding*/
if(!omc_flag[FLAG_NO_ROOTFINDING])
{
solverInfo->solverRootFinding = 1;
flag = IDARootInit(idaData->ida_mem, data->modelData->nZeroCrossings, rootsFunctionIDA);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setting root function fails while initialize IDA solver!");
}
}
infoStreamPrint(LOG_SOLVER, 0, "ida uses internal root finding method %s", solverInfo->solverRootFinding?"YES":"NO");
/* define maximum integration order of ida */
if (omc_flag[FLAG_MAX_ORDER])
{
maxOrder = atoi(omc_flagValue[FLAG_MAX_ORDER]);
flag = IDASetMaxOrd(idaData->ida_mem, maxOrder);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Failed to set max integration order!");
}
}
infoStreamPrint(LOG_SOLVER, 0, "maximum integration order %d", maxOrder);
/* if FLAG_NOEQUIDISTANT_GRID is set, choose ida step method */
if (omc_flag[FLAG_NOEQUIDISTANT_GRID])
{
idaData->internalSteps = 1; /* TRUE */
solverInfo->solverNoEquidistantGrid = 1;
}
else
{
idaData->internalSteps = 0; /* FALSE */
}
infoStreamPrint(LOG_SOLVER, 0, "use equidistant time grid %s", idaData->internalSteps?"NO":"YES");
/* check if Flags FLAG_NOEQUIDISTANT_OUT_FREQ or FLAG_NOEQUIDISTANT_OUT_TIME are set */
if (idaData->internalSteps){
if (omc_flag[FLAG_NOEQUIDISTANT_OUT_FREQ])
{
idaData->stepsFreq = atoi(omc_flagValue[FLAG_NOEQUIDISTANT_OUT_FREQ]);
}
else if (omc_flag[FLAG_NOEQUIDISTANT_OUT_TIME])
{
idaData->stepsTime = atof(omc_flagValue[FLAG_NOEQUIDISTANT_OUT_TIME]);
flag = IDASetMaxStep(idaData->ida_mem, idaData->stepsTime);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setting max steps of the IDA solver!");
}
infoStreamPrint(LOG_SOLVER, 0, "maximum step size %g", idaData->stepsTime);
} else {
idaData->stepsFreq = 1;
idaData->stepsTime = 0.0;
}
if (omc_flag[FLAG_NOEQUIDISTANT_OUT_FREQ] && omc_flag[FLAG_NOEQUIDISTANT_OUT_TIME]){
warningStreamPrint(LOG_STDOUT, 0, "The flags are \"noEquidistantOutputFrequency\" "
"and \"noEquidistantOutputTime\" are in opposition "
"to each other. The flag \"noEquidistantOutputFrequency\" superiors.");
}
infoStreamPrint(LOG_SOLVER, 0, "as the output frequency control is used: %d", idaData->stepsFreq);
infoStreamPrint(LOG_SOLVER, 0, "as the output frequency time step control is used: %f", idaData->stepsTime);
}
/* if FLAG_IDA_LS is set, choose ida linear solver method */
if (omc_flag[FLAG_IDA_LS])
{
for(i=1; i< IDA_LS_MAX;i++)
{
if(!strcmp((const char*)omc_flagValue[FLAG_IDA_LS], IDA_LS_METHOD[i])){
idaData->linearSolverMethod = (int)i;
break;
}
}
if(idaData->linearSolverMethod == IDA_LS_UNKNOWN)
{
if (ACTIVE_WARNING_STREAM(LOG_SOLVER))
{
warningStreamPrint(LOG_SOLVER, 1, "unrecognized ida linear solver method %s, current options are:", (const char*)omc_flagValue[FLAG_IDA_LS]);
for(i=1; i < IDA_LS_MAX; ++i)
{
warningStreamPrint(LOG_SOLVER, 0, "%-15s [%s]", IDA_LS_METHOD[i], IDA_LS_METHOD_DESC[i]);
}
messageClose(LOG_SOLVER);
}
throwStreamPrint(threadData,"unrecognized ida linear solver method %s", (const char*)omc_flagValue[FLAG_IDA_LS]);
}
}
else
{
idaData->linearSolverMethod = IDA_LS_KLU;
}
switch (idaData->linearSolverMethod){
case IDA_LS_SPGMR:
flag = IDASpgmr(idaData->ida_mem, 0);
break;
case IDA_LS_SPBCG:
flag = IDASpbcg(idaData->ida_mem, 0);
break;
case IDA_LS_SPTFQMR:
flag = IDASptfqmr(idaData->ida_mem, 0);
break;
case IDA_LS_DENSE:
flag = IDADense(idaData->ida_mem, idaData->N);
break;
case IDA_LS_KLU:
/* Set KLU after initialized sparse pattern of the jacobian for nnz */
break;
default:
throwStreamPrint(threadData,"unrecognized linear solver method %s", (const char*)omc_flagValue[FLAG_IDA_LS]);
break;
}
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setting linear solver method fails while initialize IDA solver!");
} else {
infoStreamPrint(LOG_SOLVER, 0, "IDA linear solver method selected %s", IDA_LS_METHOD_DESC[idaData->linearSolverMethod]);
}
/* if FLAG_JACOBIAN is set, choose jacobian calculation method */
if (omc_flag[FLAG_JACOBIAN])
{
for(i=1; i< JAC_MAX;i++)
{
if(!strcmp((const char*)omc_flagValue[FLAG_JACOBIAN], JACOBIAN_METHOD[i])){
idaData->jacobianMethod = (int)i;
break;
}
}
if(idaData->daeMode && ( idaData->jacobianMethod == COLOREDSYMJAC || idaData->jacobianMethod == SYMJAC ))
{
warningStreamPrint(LOG_STDOUT, 1, "Symbolic Jacobians are currently not supported by DAE Mode. Switch back to numerical Jacobian!");
idaData->jacobianMethod = COLOREDNUMJAC;
}
if(idaData->jacobianMethod == SYMJAC)
{
warningStreamPrint(LOG_STDOUT, 1, "Symbolic Jacobians without coloring are currently not supported by IDA. Colored symbolical Jacobian will be used.");
idaData->jacobianMethod = COLOREDSYMJAC;
}
if(idaData->jacobianMethod == NUMJAC)
{
warningStreamPrint(LOG_STDOUT, 1, "Numerical Jacobians without coloring are currently not supported by IDA. Colored numerical Jacobian will be used.");
idaData->jacobianMethod = COLOREDNUMJAC;
}
if(idaData->jacobianMethod == JAC_UNKNOWN)
{
if (ACTIVE_WARNING_STREAM(LOG_SOLVER))
{
warningStreamPrint(LOG_SOLVER, 1, "unrecognized jacobian calculation method %s, current options are:", (const char*)omc_flagValue[FLAG_JACOBIAN]);
for(i=1; i < JAC_MAX; ++i)
{
warningStreamPrint(LOG_SOLVER, 0, "%-15s [%s]", JACOBIAN_METHOD[i], JACOBIAN_METHOD_DESC[i]);
}
messageClose(LOG_SOLVER);
}
throwStreamPrint(threadData,"unrecognized jacobian calculation method %s", (const char*)omc_flagValue[FLAG_JACOBIAN]);
}
/* default case colored numerical jacobian */
}
else
{
idaData->jacobianMethod = COLOREDNUMJAC;
}
/* selects the calculation method of the jacobian */
/* in daeMode sparse pattern is already initialized in DAEMODE_DATA */
if(!idaData->daeMode && (idaData->jacobianMethod == COLOREDNUMJAC ||
idaData->jacobianMethod == COLOREDSYMJAC ||
idaData->jacobianMethod == SYMJAC))
{
ANALYTIC_JACOBIAN* jacobian = &(data->simulationInfo->analyticJacobians[data->callback->INDEX_JAC_A]);
if (data->callback->initialAnalyticJacobianA(data, threadData, jacobian))
{
infoStreamPrint(LOG_STDOUT, 0, "Jacobian or SparsePattern is not generated or failed to initialize! Switch back to normal.");
idaData->jacobianMethod = INTERNALNUMJAC;
if (idaData->linearSolverMethod == IDA_LS_KLU)
{
idaData->linearSolverMethod = IDA_LS_DENSE;
flag = IDADense(idaData->ida_mem, idaData->N);
warningStreamPrint(LOG_STDOUT, 0, "IDA linear solver method also switched back to %s", IDA_LS_METHOD_DESC[idaData->linearSolverMethod]);
}
} else {
ANALYTIC_JACOBIAN* jac = &data->simulationInfo->analyticJacobians[data->callback->INDEX_JAC_A];
infoStreamPrint(LOG_SIMULATION, 1, "Initialized colored Jacobian:");
infoStreamPrint(LOG_SIMULATION, 0, "columns: %d rows: %d", jac->sizeCols, jac->sizeRows);
infoStreamPrint(LOG_SIMULATION, 0, "NNZ: %d colors: %d", jac->sparsePattern->numberOfNoneZeros, jac->sparsePattern->maxColors);
messageClose(LOG_SIMULATION);
}
}
/* set up the appropriate function pointer */
if (idaData->linearSolverMethod == IDA_LS_KLU)
{
if (idaData->daeMode)
{
idaData->NNZ = data->simulationInfo->daeModeData->sparsePattern->numberOfNoneZeros;
flag = IDAKLU(idaData->ida_mem, idaData->N, idaData->NNZ);
idaData->jacobianMethod = COLOREDNUMJAC; /* In DAE mode only numerical matrix is supported */
}
else
{
idaData->NNZ = data->simulationInfo->analyticJacobians[data->callback->INDEX_JAC_A].sparsePattern->numberOfNoneZeros;
flag = IDAKLU(idaData->ida_mem, idaData->N, idaData->NNZ);
/* to add a cj identety matrix */
idaData->tmpJac = NewSparseMat(idaData->N, idaData->N, idaData->N);
}
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setup of linear solver KLU failed!");
}
idaData->allocatedParMem = 0; /* false */
switch (idaData->jacobianMethod){
case SYMJAC:
case NUMJAC:
case COLOREDSYMJAC:
case COLOREDNUMJAC:
flag = IDASlsSetSparseJacFn(idaData->ida_mem, callSparseJacobian);
#ifdef USE_PARJAC
allocateThreadLocalJacobians(data, &(idaData->jacColumns));
idaData->allocatedParMem = 1; /* true */
#endif
break;
default:
throwStreamPrint(threadData,"For the klu solver jacobian calculation method has to be %s or %s", JACOBIAN_METHOD[COLOREDSYMJAC], JACOBIAN_METHOD[COLOREDNUMJAC]);
break;
}
}
else
{
switch (idaData->jacobianMethod){
case SYMJAC:
case COLOREDSYMJAC:
case COLOREDNUMJAC:
case NUMJAC:
/* set jacobian function */
flag = IDADlsSetDenseJacFn(idaData->ida_mem, callDenseJacobian);
#ifdef USE_PARJAC
allocateThreadLocalJacobians(data, &(idaData->jacColumns));
idaData->allocatedParMem = 1; /* true */
#endif
break;
case INTERNALNUMJAC:
break;
default:
throwStreamPrint(threadData,"unrecognized jacobian calculation method %s", (const char*)omc_flagValue[FLAG_JACOBIAN]);
break;
}
}
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Setting jacobian function fails while initialize IDA solver!");
} else {
infoStreamPrint(LOG_SOLVER, 0, "jacobian is calculated by %s", JACOBIAN_METHOD_DESC[idaData->jacobianMethod]);
}
/* set max error test fails */
if (omc_flag[FLAG_IDA_MAXERRORTESTFAIL])
{
int maxErrorTestFails = atoi(omc_flagValue[FLAG_IDA_MAXERRORTESTFAIL]);
flag = IDASetMaxErrTestFails(idaData->ida_mem, maxErrorTestFails);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetMaxErrTestFails failed!");
}
}
/* set maximum number of nonlinear solver iterations at one step */
if (omc_flag[FLAG_IDA_MAXNONLINITERS])
{
int maxNonlinIters = atoi(omc_flagValue[FLAG_IDA_MAXNONLINITERS]);
flag = IDASetMaxNonlinIters(idaData->ida_mem, maxNonlinIters);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetMaxNonlinIters failed!");
}
}
/* maximum number of nonlinear solver convergence failures at one step */
if (omc_flag[FLAG_IDA_MAXCONVFAILS])
{
int maxConvFails = atoi(omc_flagValue[FLAG_IDA_MAXCONVFAILS]);
flag = IDASetMaxConvFails(idaData->ida_mem, maxConvFails);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetMaxConvFails failed!");
}
}
/* safety factor in the nonlinear convergence test */
if (omc_flag[FLAG_IDA_NONLINCONVCOEF])
{
double nonlinConvCoef = atof(omc_flagValue[FLAG_IDA_NONLINCONVCOEF]);
flag = IDASetNonlinConvCoef(idaData->ida_mem, nonlinConvCoef);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetNonlinConvCoef failed!");
}
}
/* configure algebraic variables as such */
if (idaData->daeMode)
{
if (omc_flag[FLAG_NO_SUPPRESS_ALG])
{
flag = IDASetSuppressAlg(idaData->ida_mem, TRUE);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Suppress algebraic variables in the local error test failed");
}
}
for(i=0; i<idaData->N; ++i)
{
tmp[i] = (i<data->modelData->nStates)? 1.0: 0.0;
}
flag = IDASetId(idaData->ida_mem, N_VMake_Serial(idaData->N,tmp));
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Mark algebraic variables as such failed!");
}
}
/* define initial step size */
if (omc_flag[FLAG_INITIAL_STEP_SIZE])
{
double initialStepSize = atof(omc_flagValue[FLAG_INITIAL_STEP_SIZE]);
assertStreamPrint(threadData, initialStepSize >= DASSL_STEP_EPS, "Selected initial step size %e is too small.", initialStepSize);
flag = IDASetInitStep(idaData->ida_mem, initialStepSize);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Set initial step size failed!");
}
infoStreamPrint(LOG_SOLVER, 0, "initial step size: %g", initialStepSize);
}
else
{
infoStreamPrint(LOG_SOLVER, 0, "initial step size is set automatically.");
}
/* configure the sensitivities part */
idaData->idaSmode = omc_flag[FLAG_IDAS] ? 1 : 0;
if (idaData->idaSmode)
{
idaData->Np = data->modelData->nSensitivityParamVars;
idaData->yS = N_VCloneVectorArray_Serial(idaData->Np, idaData->y);
idaData->ySp = N_VCloneVectorArray_Serial(idaData->Np, idaData->yp);
for(i=0; i<idaData->Np; ++i)
{
int j;
for(j=0; j<idaData->N; ++j)
{
NV_Ith_S(idaData->yS[i],j) = 0;
NV_Ith_S(idaData->ySp[i],j) = 0;
}
}
flag = IDASensInit(idaData->ida_mem, idaData->Np, IDA_SIMULTANEOUS, NULL, idaData->yS, idaData->ySp);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASensInit failed!");
}
flag = IDASetSensParams(idaData->ida_mem, data->simulationInfo->realParameter, NULL, data->simulationInfo->sensitivityParList);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetSensParams failed!");
}
flag = IDASetSensDQMethod(idaData->ida_mem, IDA_FORWARD, 0);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASetSensDQMethod failed!");
}
flag = IDASensEEtolerances(idaData->ida_mem);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASensEEtolerances failed!");
}
/*
flag = IDASetSensErrCon(idaData->ida_mem, TRUE);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASensEEtolerances failed!");
}
*/
/* allocate result workspace */
idaData->ySResult = N_VCloneVectorArrayEmpty_Serial(idaData->Np, idaData->y);
for(i = 0; i < idaData->Np; ++i)
{
N_VSetArrayPointer_Serial((data->simulationInfo->sensitivityMatrix + i*idaData->N), idaData->ySResult[i]);
}
}
if (compiledInDAEMode){
idaDataGlobal = idaData;
initializedSolver = 1;
data->callback->functionDAE = ida_event_update;
}
messageClose(LOG_SOLVER);
if (measure_time_flag) rt_clear(SIM_TIMER_SOLVER); /* Initialization should not add this timer... */
free(tmp);
TRACE_POP
return 0;
}
/* deinitialize ida data */
int ida_solver_deinitial(IDA_SOLVER *idaData)
{
TRACE_PUSH
free(idaData->simData);
free(idaData->ysave);
free(idaData->ypsave);
free(idaData->delta_hh);
if (!idaData->daeMode && idaData->linearSolverMethod == IDA_LS_KLU){
DestroySparseMat(idaData->tmpJac);
}
if (idaData->daeMode)
{
free(idaData->states);
free(idaData->statesDer);
}
if (idaData->idaSmode)
{
N_VDestroyVectorArray_Serial(idaData->yS, idaData->Np);
N_VDestroyVectorArray_Serial(idaData->ySp, idaData->Np);
N_VDestroyVectorArray_Serial(idaData->ySResult, idaData->Np);
}
N_VDestroy_Serial(idaData->errwgt);
N_VDestroy_Serial(idaData->newdelta);
#ifdef USE_PARJAC
if (idaData->allocatedParMem) {
freeAnalyticalJacobian(&(idaData->jacColumns));
idaData->allocatedParMem = 0;
}
#endif
IDAFree(&idaData->ida_mem);
TRACE_POP
return 0;
}
int ida_event_update(DATA* data, threadData_t *threadData)
{
IDA_SOLVER *idaData = idaDataGlobal;
int flag;
long nonLinIters;
double init_h;
if (compiledInDAEMode){
if (initializedSolver){
data->simulationInfo->needToIterate = 0;
memcpy(idaData->states, data->localData[0]->realVars, sizeof(double)*data->modelData->nStates);
getAlgebraicDAEVars(data, idaData->states + data->modelData->nStates);
memcpy(idaData->statesDer, data->localData[0]->realVars + data->modelData->nStates, sizeof(double)*data->modelData->nStates);
/* update inner algebraic get new values from data */
if (measure_time_flag) rt_accumulate(SIM_TIMER_SOLVER);
evaluateDAEResiduals_wrapperEventUpdate(data, threadData);
getAlgebraicDAEVars(data, idaData->states + data->modelData->nStates);
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
infoStreamPrint(LOG_SOLVER, 0, "##IDA## do event update at %.15g", data->localData[0]->timeValue);
flag = IDAReInit(idaData->ida_mem,
data->localData[0]->timeValue,
idaData->y,
idaData->yp);
/* get initial step to provide a direction of the solution */
IDAGetActualInitStep(idaData->ida_mem, &init_h);
/* provide a feasible step-size if it's too small */
if (init_h < DBL_EPSILON){
init_h = DBL_EPSILON;
IDASetInitStep(idaData->ida_mem, init_h);
infoStreamPrint(LOG_SOLVER, 0, "##IDA## corrected step-size at %.15g", init_h);
}
/* increase limits of the non-linear solver */
IDASetMaxNumStepsIC(idaData->ida_mem, 2*idaData->N*10);
IDASetMaxNumJacsIC(idaData->ida_mem, 2*idaData->N*10);
IDASetMaxNumItersIC(idaData->ida_mem, 2*idaData->N*10);
/* Calc Consistent y_algebraic and y_prime with current y */
flag = IDACalcIC(idaData->ida_mem, IDA_YA_YDP_INIT, data->localData[0]->timeValue+init_h);
/* debug */
IDAGetNumNonlinSolvIters(idaData->ida_mem, &nonLinIters);
infoStreamPrint(LOG_SOLVER, 0, "##IDA## IDACalcIC run status %d.\nIterations : %ld\n", flag, nonLinIters);
/* try again without line search if first try fails */
if (checkIDAflag(flag)){
infoStreamPrint(LOG_SOLVER, 0, "##IDA## first event iteration failed. Start next try without line search!");
IDASetLineSearchOffIC(idaData->ida_mem, TRUE);
flag = IDACalcIC(idaData->ida_mem, IDA_YA_YDP_INIT, data->localData[0]->timeValue+data->simulationInfo->tolerance);
IDAGetNumNonlinSolvIters(idaData->ida_mem, &nonLinIters);
infoStreamPrint(LOG_SOLVER, 0, "##IDA## IDACalcIC run status %d.\nIterations : %ld\n", flag, nonLinIters);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## discrete update failed flag %d!", flag);
}
}
/* obtain consistent values of y_algebraic and y_prime */
IDAGetConsistentIC(idaData->ida_mem, idaData->y, idaData->yp);
/* update inner algebraic variables */
if (measure_time_flag) rt_accumulate(SIM_TIMER_SOLVER);
evaluateDAEResiduals_wrapperEventUpdate(data, threadData);
memcpy(data->localData[0]->realVars, idaData->states, sizeof(double)*data->modelData->nStates);
// and also algebraic vars
setAlgebraicDAEVars(data, idaData->states + data->modelData->nStates);
memcpy(data->localData[0]->realVars + data->modelData->nStates, idaData->statesDer, sizeof(double)*data->modelData->nStates);
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
/* reset initial step size again to default */
IDASetInitStep(idaData->ida_mem, 0.0);
}
}
else{
if (measure_time_flag) rt_accumulate(SIM_TIMER_SOLVER);
data->callback->functionDAE(data, threadData);
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
}
return 0;
}
/* main ida function to make a step */
int ida_solver_step(DATA* data, threadData_t *threadData, SOLVER_INFO* solverInfo)
{
TRACE_PUSH
double tout = 0;
int i = 0, flag;
int retVal = 0, finished = FALSE;
int saveJumpState;
long int tmp;
static unsigned int stepsOutputCounter = 1;
int stepsMode;
int restartAfterLSFail = 0;
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
IDA_SOLVER *idaData = (IDA_SOLVER*) solverInfo->solverData;
SIMULATION_DATA *sData = data->localData[0];
SIMULATION_DATA *sDataOld = data->localData[1];
MODEL_DATA *mData = (MODEL_DATA*) data->modelData;
/* alloc all work arrays */
if (!idaData->daeMode)
{
N_VSetArrayPointer(data->localData[0]->realVars, idaData->y);
N_VSetArrayPointer(data->localData[1]->realVars + data->modelData->nStates, idaData->yp);
}
if (solverInfo->didEventStep)
{
idaData->setInitialSolution = 0;
}
/* reinit solver */
if (!idaData->setInitialSolution)
{
debugStreamPrint(LOG_SOLVER, 0, "Re-initialized IDA Solver");
/* initialize states and der(states) */
if (idaData->daeMode)
{
memcpy(idaData->states, data->localData[0]->realVars, sizeof(double)*data->modelData->nStates);
/* and also algebraic vars */
getAlgebraicDAEVars(data, idaData->states + data->modelData->nStates);
memcpy(idaData->statesDer, data->localData[0]->realVars + data->modelData->nStates, sizeof(double)*data->modelData->nStates);
}
/* calculate matrix for residual scaling */
if (omc_flag[FLAG_IDA_SCALING])
{
getScalingFactors(data, idaData, NULL);
/* scale idaData->y and idaData->yp */
infoStreamPrint(LOG_SOLVER_V, 1, "Scale y and yp");
idaScaleData(idaData);
messageClose(LOG_SOLVER_V);
}
flag = IDAReInit(idaData->ida_mem,
solverInfo->currentTime,
idaData->y,
idaData->yp);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Something goes wrong while reinit IDA solver after event!");
}
/* calculate matrix for residual scaling */
if (omc_flag[FLAG_IDA_SCALING])
{
/* scale idaData->y and idaData->yp */
idaReScaleData(idaData);
}
if (idaData->idaSmode)
{
for(i=0; i<idaData->Np; ++i)
{
int j;
for(j=0; j<idaData->N; ++j)
{
NV_Ith_S(idaData->yS[i],j) = 0;
NV_Ith_S(idaData->ySp[i],j) = 0;
}
}
flag = IDASensReInit(idaData->ida_mem, IDA_SIMULTANEOUS, idaData->yS, idaData->ySp);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## set IDASensInit failed!");
}
}
idaData->setInitialSolution = 1;
}
saveJumpState = threadData->currentErrorStage;
threadData->currentErrorStage = ERROR_INTEGRATOR;
/* try */
#if !defined(OMC_EMCC)
MMC_TRY_INTERNAL(simulationJumpBuffer)
#endif
/* Check that tout is not less than timeValue otherwise the solver
* will come in trouble.
* If that is the case we skip the current step. */
if (solverInfo->currentStepSize < DASSL_STEP_EPS)
{
infoStreamPrint(LOG_SOLVER, 0, "Desired step to small try next one");
infoStreamPrint(LOG_SOLVER, 0, "Interpolate linear");
/* linear extrapolation */
for(i = 0; i < idaData->N; i++)
{
NV_Ith_S(idaData->y, i) = NV_Ith_S(idaData->y, i) + NV_Ith_S(idaData->yp, i) * solverInfo->currentStepSize;
}
sData->timeValue = solverInfo->currentTime + solverInfo->currentStepSize;
if (measure_time_flag) rt_accumulate(SIM_TIMER_SOLVER);
data->callback->functionODE(data, threadData);
solverInfo->currentTime = sData->timeValue;
TRACE_POP
return 0;
}
/* Calculate steps until TOUT is reached */
if (idaData->internalSteps)
{
/* If internalSteps are selected, let IDA run to stopTime or next sample event */
if (data->simulationInfo->nextSampleEvent < data->simulationInfo->stopTime)
{
tout = data->simulationInfo->nextSampleEvent;
}
else
{
tout = data->simulationInfo->stopTime;
}
stepsMode = IDA_ONE_STEP;
flag = IDASetStopTime(idaData->ida_mem, tout);
if (checkIDAflag(flag)){
throwStreamPrint(threadData, "##IDA## Something goes wrong while set stopTime!");
}
}
else
{
tout = solverInfo->currentTime + solverInfo->currentStepSize;
stepsMode = IDA_NORMAL;
}
do
{
infoStreamPrint(LOG_SOLVER, 1, "##IDA## new step from %.15g to %.15g", solverInfo->currentTime, tout);
if (measure_time_flag) rt_accumulate(SIM_TIMER_SOLVER);
/* read input vars */
externalInputUpdate(data);
data->callback->input_function(data, threadData);
if (measure_time_flag) rt_tick(SIM_TIMER_SOLVER);
if (omc_flag[FLAG_IDA_SCALING])
{
/* scale idaData->y and idaData->yp */
idaScaleData(idaData);
}
flag = IDASolve(idaData->ida_mem, tout, &solverInfo->currentTime, idaData->y, idaData->yp, stepsMode);
if (omc_flag[FLAG_IDA_SCALING])
{
/* rescale idaData->y and idaData->yp */
idaReScaleData(idaData);
}
/* set time to current time */
sData->timeValue = solverInfo->currentTime;
/* error handling */